Sure-Loc Hardware DU101 11P Durango Passage Knob, Vintage Bronze Hollow, mushroom shaped knob Contemporary Series Adjustable 2 3/8"-2 3/4" Backset Fits doors 1 3/8"- 1 3/4" thick Sure-Lock Contemporary Series Fits Doors 1 3/8" to 1 3/4" thick Includes mounting hardware and instructions for easy installation Adjustable latches fit standard door preparations at 2 3/8 as well as 2 3/4 Inch